Duckett Creek Sanitation District Treatment Plant #1
Saint Charles, MO · St Charles County · Publicly Owned Treatment Works
- Average flow
- 4.04 MGD
- Design flow
- —
- NPDES permit
- MO0085472
- Administratively continued
- Permit expires
- June 2021
- Population served
- 5,439
- CWNS 2022
Duckett Creek Sanitation District Treatment Plant #1 is a publicly owned wastewater treatment works in Saint Charles, St Charles County, Missouri treating an average of 4.04 million gallons per day, serving about 5,439 residents. Treatment on site includes clarifiers, carrousels / oxidation ditches, biological treatment, other, biosolids aerobic digestion, biosolids mechanical dewatering and other unit processes. It discharges under NPDES permit MO0085472 (administratively continued), which expires in June 2021, with 0 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Carrousels / oxidation ditches
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Biological Treatment, Other
unit processBiosolids Aerobic Digestion
unit processBiosolids Mechanical Dewatering
unit processDisinfection, UV
unit processScreening
unit processUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 0
- Effluent violations
- 0
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Saint Charles
Saint Charles's capital improvement plan lists 66 water, sewer and wastewater line items worth $31M starting 2025–2030. The largest budgeted items are shown here.
All water and sewer capital projects in Saint Charles →
| Project | Budget | Years |
|---|---|---|
| New Town Vac System Canisters & Controllers | $4,306,000 | 2025–2030 |
| Lindenwood and Randolph Fire Flow | $1,753,600 | 2027–2028 |
| Trunkmain along 9th, Morgan, 2nd, Olive, Tecumseh & N. Main | $1,700,000 | 2029–2029 |
| New Town Vacuum System Alarms and Monitoring | $1,600,000 | 2025–2029 |
| Assorted Manhole Projects | $1,200,000 | 2025–2030 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
Decision-makers at Duckett Creek Sanitation District Treatment Plant #1.
No verified contacts on file yet
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Nearby wastewater treatment plants in Missouri
Saint Peters · 6 mi away
4.83 MGD
St. Charles · 7 mi away
3.73 MGD
Weldon Spring · 8 mi away
4.28 MGD
St. Charles · 9 mi away
0.0094 MGD
St. Charles · 11 mi away
—
O'Fallon · 12 mi away
6.7 MGD
Valley Park · 12 mi away
10.4 MGD
High Ridge · 15 mi away
0.02 MGD
Duckett Creek Sanitation District Treatment Plant #1: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated May 20, 2025.